This standard specifies the sampling, steps, result calculation and evaluation criteria for evaluating the strength homogeneity test of a single variety and single strength grade of cement in a certain period and the sampling, steps and result calculation of the strength uniformity test of a single number of cements in a certain period. This standard applies to general cement, medium and low heat cement, sulfur-resistant Portland cement and other cements with a compressive strength of 28 days, as well as other varieties and ages of cement that require this method.